In perhaps the most vexing element of the debate, the majority of listeners hear beyond doubt one of the two words, with few waffling between the two.

A straw poll carried out among staff in AFP’s Washington bureau counted 17 for Yanny, and 14 for Laurel. Just three were caught in between — hearing first one, then the other when played again, or a mix of the two sounds.

The controversy recalls the similarly impassioned debate that broke out over the #TheDress: in 2015 a photo of a two-toned frock had social media users tearing their hair out over whether its colors were white and gold, or black and blue.